This page explains how Shing-Li Sung (USATT# 30198)'s rating went from 2129 to 2151 at the Swan Sunday League event from 3 Feb 2019. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.